Tag Archives: prevention

Prevent Prostate Cancer with Three Amino Acids?

Three specific amino acids may aid in the prevention of prostate cancer according to a study. The three aminos include methionine, phenylalanine, and tyrosine. During protein synthesis by the body, the amino acids tyrosine, methionine, and phenylalanine are utilized. Restriction of these amino acids depends on glucose metabolism, which when altered aids in cell death of cancer cells within human prostate cancer, and may aid in preventing prostate cancer.

Study linking amino acids and prostate cancer prevention

YM Fu, H Lin, et al., did a study at the Department of Pharmaceutical Sciences at Washington State University said that it is selective amino acid restriction of tyrosine and phenylalanine, plus methionine or glutamine that target mitochondria in cells that are linked to prostate cancer cell death.

Glucose metabolism modulation is tied to the process and “crucial switches connecting metabolism and these signaling molecules to cell survival during amino acid restriction” become target factors preventing prostate cancer, say the researchers.

Second study on prostate cancer and amino acids

Another study by YS Kim from Washington State University showed an identification of molecular targets regarding specific amino acid dependency and how it modulates specific kinds of prostate cancer cells. To find out how the amino acids can prevent prostate cancer, they investigated if restriction of tyrosine, phenylalanine, and methionine could inhibit the growth and metastasis of prostate cancer.

Kim progressed outward in this field of research because of the “underlying the anticancer activity of tyrosine/phenylalanine and methionine restriction. This is especially important research since there still is no satisfactory drug for treatment of androgen-independent, metastatic human prostate cancer.”

Even though further research is needed regarding the amino acids phenylalanine, tyrosine, and methionine for prostate cancer prevention, it has expanded avenues for antimetastatic, anti-invasive, apoptosis-based therapies for the preventing prostate cancer.

Prostate cancer, being one of the major cancers that kill men in the North American continent, is the reason why males should be regularly screened for this deadly disease.




Part 1: Alzheimer’s Prevention? Special Foods and Cysteine and Glutathione Levels

The amino acids cysteine and glutathione play a role, it seems, in preventing the onset of Alzheimer’s. Evidently, according to a study by SS Karuppagounder, JT Pinto, et al., in their study on “Dietary supplementation with resveratrol reduces plaque pathology in a transgenic model of Alzheimer’s disease” from the Department of Neurology and Neurosciences, at the Burke Medical Research Institute, in White Plains, New York, the amino acid levels of cysteine and glutathione are affected in Alzheimer’s patients by the same types of chemopreventive agents (cancer-preventing foods) that cancer patients would eat to help prevent cancer.

One food constituent in particular was studied by the researchers—Resveratrol. Resveratrol is a polyphenol that is found in peanuts, pomegranates, soybeans, and especially red wine. People have heard for years about resveratrol being good for the heart, but evidently it is good for the brain as well, including other neurodegenerative diseases, including Alzheimer’s disease.

Even though resveratrol was fed to the hosts for forty-five days, it was not detectable in the brain, yet plaque formation in the regions of the brain were diminished. The majority of the diminished brain-plaques were “observed in medial cortex (-48%), striatum (-89%) and hypothalamus (-90%). … However, brain glutathione declined 21% and brain cysteine increased 54%.”

Cysteine and Glutathione’s role in chemopreventive agents

There is a list of foods, called chemopreventive agents, which help prevent cancer, that also may help with oxidative stress, destroying free radicals that also cause DNA damage, or help prevent plaques in the brain of people who may otherwise be developing Alzheimer’s disease (AD). I will cover some of these agents first:

According to one source, there are two such agents that have carcinogen-detoxifying activity that “might be achieved by combination of an agent such as N-acetyl-l-cysteine (NAC), which provides substrate for glutathione (GSH) synthesis, with agents such as oltipraz or garlic/onion disulfides, which enhance GSH S-transferases (GST).”

The food constituents will be listed further in our next section…

CONTINUE TO Part 2: Alzheimer’s Prevention? Special Foods and Cysteine and Glutathione Levels